diff --git a/cmd/packer-sdc/internal/mapstructure-to-hcl2/mapstructure-to-hcl2.go b/cmd/packer-sdc/internal/mapstructure-to-hcl2/mapstructure-to-hcl2.go
index 3cd69a8bc..0d2870df0 100644
--- a/cmd/packer-sdc/internal/mapstructure-to-hcl2/mapstructure-to-hcl2.go
+++ b/cmd/packer-sdc/internal/mapstructure-to-hcl2/mapstructure-to-hcl2.go
@@ -140,10 +140,17 @@ func (cmd *Command) Run(args []string) int {
 		if !utOk {
 			continue
 		}
+
 		pos := sort.SearchStrings(typeNames, id.Name)
 		if pos >= len(typeNames) || typeNames[pos] != id.Name {
 			continue // not a struct we care about
 		}
+		// Sometimes we see the underlying struct for a similar name typed, which results
+		// in an incorrect FlatMap. If the type names are not exactly the same skip.
+		if nt.Obj().Name() != id.Name {
+			continue // not the struct we are looking for
+		}
+
 		// make sure each type is found once where somehow sometimes they can be found twice
 		typeNames = append(typeNames[:pos], typeNames[pos+1:]...)
 		flatenedStruct, err := getMapstructureSquashedStruct(obj.Pkg(), utStruct)